Re: Mathdesign and Fourier fonts (was What do you miss in ConTeXt?)

[Mojca Miklavec <mojca.miklavec.lists@gmail.com>]

On Sat, Feb 20, 2010 at 11:15, Mikael Persson <mickep@gmail.com> wrote:
> On Wed, Feb 17, 2010 at 10:10 PM, Mikael Persson <mickep@gmail.com> wrote:
>> On Tue, Feb 16, 2010 at 1:42 PM, Mikael Persson <mickep@gmail.com> wrote:
>>> On Tue, Feb 16, 2010 at 1:31 PM, Hans Hagen <pragma@wxs.nl> wrote:
>>>> On 16-2-2010 11:38, Mikael Persson wrote:
>>>>>
>>>>> Thank you Mojca and Aditya for your answers,
>>>>>
>>>>> I hope the mathdesign part of mtx-update.lua will end up in the
>>>>> orignal file. I do not know how to use it now.
>>>>>
>>>>> If I save this file and update with "sh firstsetup.sh --extras=all"
>>>>> (or --extras=mathdesign) it seems that the mtx-update.lua is
>>>>> overwritten with the version from the server. I do not know howto
>>>>> upgrade with mtx-update.lua without firstsetup.sh.
>>>>>
>>>>> About the fourier fonts. Is there a lot of work to do in math-vfu.lua
>>>>> to get it to work? I looked into that file, but it was a bit hard to
>>>>> understand what is needed...
>>>>>
>>>>> Maybe it is hard work to get the fonts working, but I really think
>>>>> that if we have several text+math fonts easily available in the
>>>>> minimals that will make (new) users very happy.
>>>>
>>>> it depends ... if the font is in tex default encoding then it's only a
>>>> matter of adding a small table
>>>
>>> I'm not 100% sure how it works wth font encodings, but the fourier doc
>>> (http://mirror.ctan.org/fonts/fourier-GUT/doc/latex/fourier/fourier-doc-en.pdf)
>>> says that the fonts are _fully_ T1 encoded.
>>>
>>> Mikael
>>>
>>> PS: Hans, do you have any comments about the mathdesign patch
>>> suggested by Mojca above?
>>
>> I have now manually downloaded the mathdesign fonts (and the charter
>> fonts, not available on the server it seems)
>>
>> The fonts gets used, but I get upright math letters instead of italic
>> ones. My test file is given by
>>
>> \definetypeface[charter][rm][serif][charter]     [default]
>> \definetypeface[charter][mm][math] [charter]     [default]
>>
>> \setupbodyfont[charter,10pt]
>>
>> \starttext
>> We define, for real $x$, the absolute value of $x$ as
>> \startformula
>> |x|=
>> \startcases
>> \NC \hphantom{-}x \MC x\geq 0,\NR
>> \NC -x \MC x<0.\NR
>> \stopcases
>> \stopformula
>> Also let $\alpha$, $\beta$ and $\Gamma$ be\dots
>> \stoptext
>>
>> The output can be found at
>>
>> http://home.imf.au.dk/mickep/mdesign.pdf
>>
>> Typesetting a similar document with LaTeX I get italic math (note also
>> that the \Gamma is upright, I guess that this is an option that is
>> turned on by default by LaTeX)
>>
>> http://home.imf.au.dk/mickep/lmdesign.pdf
>>
>> I guess this has something to do with the following lines in math-vfu.lua
>>
>> mathematics.make_font ( "charter-math", {
>>    { name = "file:bchr8a", features = "virtualmath", main = true },
>>  -- { name = "md-chr7m.tfm", vector = "tex-mr" },
>>    { name = "md-chri7m.tfm", vector = "tex-mi", skewchar=0x7F },
>>    { name = "md-chri7m.tfm", vector = "tex-it", skewchar=0x7F },
>>    { name = "md-chr7y.tfm", vector = "tex-sy", skewchar=0x30,
>> parameters = true },
>>    { name = "md-chr7v.tfm", vector = "tex-ex", extension = true },
>>    { name = "msam10.tfm", vector = "tex-ma" },
>>    { name = "msbm10.tfm", vector = "tex-mb" },
>> } )
>>
>> However, I am not able guess what to change (I tried different things
>> available in mdbch.map).
>>
>> Any help is appreciated.
>>
>> Mikael
>>
>
> Hans, Mojca, Aditya, Wolfgang and others
>
> 1) Can anyone confirm this problem in the previous mail or point out
> what might be wrong?

I cannot confirm since I get

Assertion failed: (l_fonts[1] != 0), function read_char_packets, file
../../../source/texk/web2c/luatexdir/font/luafont.c, line 881.
MTXrun | fatal error: no return code, message: luatex: execution interrupted


> 2) The problem Troy had with lucida, is it the same?

Might be related, but solving one won't solve the other one.

> 3) What is needed to get fourier fonts working? Is it enough adding to
> math-vfu.lua an entry like
> mathematics.make_font ( "fourier-math", { ...
> })
> with the right names for fourier?

If the font comes with some weird encoding, then you also need to
write the whole slot-to-unicode mapping.

See for example:

fonts.enc.math["tex-sy"] = {
    [0x0002D] = 0x00, -- -
    [0x02212] = 0x00, -- -
--  [0x02201] = 0x00, -- complement
--  [0x02206] = 0x00, -- increment
--  [0x02204] = 0x00, -- not exists
--~     [0x000B7] = 0x01, -- cdot
    [0x022C5] = 0x01, -- cdot
    [0x000D7] = 0x02, -- times
    [0x0002A] = 0x03, -- *
    [0x02217] = 0x03, -- *
    [0x000F7] = 0x04, -- div
    [0x022C4] = 0x05, -- diamond
    [0x000B1] = 0x06, -- pm
    [0x02213] = 0x07, -- mp


There is

mathematics.make_font ( "charter-math", {
    { name = "file:bchr8a", features = "virtualmath", main = true },
 -- { name = "md-chr7m.tfm", vector = "tex-mr" },
    { name = "md-chri7m.tfm", vector = "tex-mi", skewchar=0x7F },
    { name = "md-chri7m.tfm", vector = "tex-it", skewchar=0x7F },
    { name = "md-chr7y.tfm", vector = "tex-sy", skewchar=0x30,
parameters = true },
    { name = "md-chr7v.tfm", vector = "tex-ex", extension = true },
    { name = "msam10.tfm", vector = "tex-ma" },
    { name = "msbm10.tfm", vector = "tex-mb" },
} )

But I'm not sure if all of the fonts are right (I need to figure out
how to compile the example in the first place). A way to check is to
run the following with MKII and compare both for example:

\showfont[md-chr7m.tfm]
\showfont[rm-lmr10]

Mojca
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